am having trouble understanding the following chemistry questions, please advise :) PART A: In the following chemical equation indicate the reactant that is a Bronsted-Lowry acid: HCN(aq) + H2O(l) ⇌ H3O+(aq) + CN-(aq) A. HCN B. H2O C. H3O+ D. CN- 4. Which of the following reactions would be expected to have a positive entropy change, ΔrS° > 0? 1. 2 SO2(g) + O2(g) → 2 SO3(g)

Pushing Electrons
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Author:Weeks, Daniel P.
Publisher:Weeks, Daniel P.
Chapter3: Mechanisms
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Problem 31EQ: The reaction just described is reversible. Deprotonation of the conjugate acid of an organic base by...
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I am having trouble understanding the following chemistry questions, please advise :)

PART A: In the following chemical equation indicate the reactant that is a Bronsted-Lowry acid:
HCN(aq) + H2O(l) ⇌ H3O+(aq) + CN-(aq)

A. HCN

B. H2O

C. H3O+

D. CN-

4. Which of the following reactions would be expected to have a positive entropy change, ΔrS° > 0?
1. 2 SO2(g) + O2(g) → 2 SO3(g)
2. Ba(OH)2(s) → BaO(s) + H2O(g)
3. CO(g) + 2 H2(g) → CH3OH(l)


A. 1 only

B. 2 only

C. 3 only

D. 1 and 2

E. 1 and 3

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